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All Journal VALENSI Jurnal Natur Indonesia Gorga : Jurnal Seni Rupa The Journal of Pure and Applied Chemistry Research Jurnal Riset Kimia PROSIDING SEMINAR KIMIA MUDRA Jurnal Seni Budaya Indonesian Journal of Chemistry Dance and Theatre Review: Jurnal Tari, Teater, dan Wayang Batoboh : Jurnal Pengabdian Pada Masyarakat Jurnal Ecolab JURNAL PHOTON PROSIDING: SENI, TEKNOLOGI, DAN MASYARAKAT PROPORSI : Jurnal Desain, Multimedia dan Industri Kreatif Jurnal Riset Teknologi Pencegahan Pencemaran Industri Warta Pengabdian Andalas: Jurnal Ilmiah Pengembangan Dan Penerapan Ipteks REACTOR : Journal of Research On Chemistry And Engineering Journal of Multidisciplinary Applied Natural Science JURNAL KIMIA SAINTEK DAN PENDIDIKAN SAINTI: Majalah Ilmiah Teknologi Industri
Novesar Jamarun
Andalas University
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Education Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Nursing Physics Social Sciences Other

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DIP-COATING SENYAWA KALSIUM FOSFAT DARI BATU KAPUR BUKIT TUI MELALUI METODE SOL-GEL Jamarun, Novesar; Anggresani, Lia; Arief, Syukri
Jurnal Riset Kimia Vol 5, No 1 (2011): September
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v5i1.179

Abstract

 ABSTRACT Preparation of Dip-Coating Calcium Phosphate via sol-gel method using natural limestone Bukit Tui as calcium precursors and diammonium hydrogen phosphate as phosphorus precursors with sol-gel process has been investigated. Ethanol was used as solvent and DEA (diethanolamine) was used stabilizing agent. The powder were prepared by calcinated the sol at 950 oC. The products were characterized by Fourier Transform Infra Red, X-Ray Diffraction and Scanning Electron Microscopy. FTIR results showed that the vibration form was PO43-, P2O74-, O-H and CO2. XRD patterns of powder with various Ca/P mol ratio showed that the product of calcium phosphate was Ca2P2O7 and also found the hydroxyapatite Ca10(PO4)6(OH)2 in Ca/P mol ratio 1,7. SEM images of powder calcium phosphate revealed that their morphology were spheric and homogen. The coating process was done at glass substrate with coating speed 20 cm/min by calcinations at 400 oC. XRD patterns of thin layer showed that the product was Ca2P2O7 and SEM images of thin layer revealed that their morphology were bulk. Keywords: Natural limestone, calcium phosphate, hydroxyapatite, sol-gel, dip-coating
PENGARUH SUHU PADA PEMBENTUKAN PRECIPITATED CALCIUM CARBONATE (PCC) MELALUI METODA KAUSTIK SODA DENGAN MENGGUNAKAN PELARUT ASAM KLORIDA Hermawan, Budi; Arief, Syukri; Jamarun, Novesar
Jurnal Riset Kimia Vol 3, No 1 (2009): September
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v3i1.36

Abstract

 ABSTRACT Precipitated Calcium Carbonate (PCC) is the limestone product resulting from certain process steps. By XRF measurement it has found that the content of CaO (oxide calcium) in limestone Bukit Tui Padang Panjang as follows 54.19%, SiO2 1.03%, Al2O3 0.39%, MgO 0.46% and Fe2O3 0.2%. Rendemen PCC at optimum concentration of 0.75 M HCl is 69.77%. The formation of PCC by using the highest PCC rendemen aquabides is 9.28% at optimum temperature of 50°C. With 0.75 M HCl, the highest rendemen is 79.32% at optimum temperature 70°C. The formation of crystals in the form vaterite, aragonite and calcite were evidenced by X-ray Diffraction (XRD). Treatment with 2.00 M HCl at 30°C showed the formation of vaterite (45.83%), aragonite (35.93%) and calcite (18.24%) with crystals size of 28.43 nm. In the other case, preparation with 0.75 M HCl at 30°C resulting the percentage of vaterite and aragonite which were 73.01% and 26.99% respectively fairished 28.06 nm. Then for the one which were treated with 0.75 M HCl at 70°C indicated the formation of vaterite (75.53%) fairished 33.68 nm and aragonite (24.47%). SEM (Scanning Electron Microscopy) towards the sample prepared from 0.75 M HCl at 30°C have clearly shown that the particle sphere fairished at 3.68 nm where the one treated with 0.75 M HCl at 70°C having particle sphere fairished at 3.3 µm showing needle like estimated of 3.8 µm. Keywords : Precipitated Calcium Carbonate (PCC), caustic soda method 
PEMBUATAN PRECIPITATED CALCIUM CARBONATE (PCC) DARI BATU KAPUR DENGAN METODA KAUSTIK SODA Jamarun, Novesar; -, Yulfitrin; Arief, Syukri
Jurnal Riset Kimia Vol 1, No 1 (2007): September
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v1i1.54

Abstract

 ABSTRAK PCC dapat dihasilkan dari batu kapur melalui tiga metoda yaitu metoda solvay, karbonasi dan metoda kaustik soda.  Pada penelitian ini PCC disintesis dengan metoda kaustik soda yang dimodifikasi, yakni dengan mereaksikan batu kapur yang sudah dikalsinasi (CaO) dengan asam nitrat, membentuk garam kalsium nitrat yang mudah larut. Larutan garam yang terbentuk direaksikan dengan larutan natrium karbonat sehingga terbentuk endapan kalsium karbonat (PCC).  Berdasarkan analisis XRF kandungan CaO dalam batu kapur yang diambil dari 5 daerah (Halaban, Lintau Buo, Bukit Tui, Solok, Indarung) di Sumatera Barat berkisar antara 52,79% sampai 54,93%, dengan kandungan tertinggi pada daerah Lintau Buo (54,93%).   PCC yang dihasilkan paling banyak  diperoleh pada konsentrasi 2,00 M yaitu 96,52%.  Berdasarkan  analisis XRD, PCC mempunyai bentuk kristal kalsit dan vaterit  dengan ukuran kristal  13,95-14,02 nm, analisis dengan SEM menunjukkan partikel berbentuk kubus (kalsit)  dengan ukuran 2 µm.
PENGARUH KONDISI KALSINASI PADA SINTESIS SENYAWA HYDROXYAPATITE Utami, Lisa; Arief, Syukri; Jamarun, Novesar
Sistem Informasi Vol 2 No 1 (2011): Jurnal Photon
Publisher : Fakultas MIPA dan Kesehatan Universitas Muhammadiyah Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1030.206 KB)

Abstract

Kalsium fosfat telah menjadi perhatian yang menarik dalam bidang medis dan kedokteran karena biocompatibilitynya yang baik dan struktur serta komposisi kimianya yang sama dengan fasa mineral jaringan keras manusia (tulang dan gigi). Penelitian ini difoukuskan untuk mempelajari faktor yang mempengaruhi morfologi dan komposisi fasa dari senyawa hydroxyapatite dengan menggunakan prekusor diammonium hydrogen phosphate sebagai sumber fosfat serta pengaruh kalsinasi pada suhu 200, 400, 600, 800 dan 1000oC. Produk hidroxyapatite yang dihasilkan dikarakterisasi dengan FTIR, XRD, SEM dan TGA. Hidroxyapatite yang dihasilkan dengan variasi suhu kalsinasi mempengaruhi morfologi dan komposisi fasa dari senyawa kalsium fosfat yang dihasilkan. Fasa yang terbentuk sebelum sampel powder fosfat dikalsinasi dengan (NH4)2HPO4 sebagai sumber fosfat adalah Ca2P2O7.2H2O dengan ukuran kristal 67 nm. Ketika sampel powder kalsium fosfat dikalsinasi pada temperatur 600˚C fasa yang terbentuk dengan menggunakan (NH4)2HPO4 sebagai sumber fosfat adalah hydroxiapatite (HAP) dengan ukuran kristal 8,66 nm Dan ketika sampel dikalsinasi pada temperatur 1000˚C fasa yang dihasilkan yaitu Ca2P2O7 dan Ca3(PO4)2.
DEGRADASI SENYAWA PERMETRINDENGAN MENGGUNAKAN TiO2-Anatase DAN ZEOLIT ALAM SECARA SONOLISIS -, Zilfa; Suyani, Hamzar; -, Safni; Jamarun, Novesar
Jurnal Riset Kimia Vol 2, No 2 (2009): March
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v2i2.162

Abstract

  ABSTRACT The research about the degradation of permethryn compound had been done by sonolysis method using anatase- TiO2 and natural zeolyte (mordenit kinds) as catalysts. Permethryn is one of synthetic pyretroid pesticides that low toxicity for mamals but it is high toxicity for fishs, insects and water microorganisms. Sonolysis method is conducted by using ultrasonic wave at frequency 45 kHz. The results show that sonolysis method without the addition of anatase-TiO2 and zeolite on optimum temperature at 40°C during 120 minutes treatments could be degrade 20 mg/L permethryn until 22.23%. In other hands, the degradation of 20 mg/L permethryn in the same condition with adding 0.002 g anatase-TiO2 achieved 44.95% but for using 0.2 g zeolyte could be degrade 52.34%.  Keywords :  degradation, permethrin ,TiO2-anatase , sonolysis, zeolite   
PEMBUATAN PASTA DAN PEMBENTUKAN LAPISAN TIPIS HIDROKSI APATIT KARBONAT Samah, Selfa Dewati; Arief, Syukri; Jamarun, Novesar
Jurnal Riset Kimia Vol 7, No 2 (2014): March
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v7i2.180

Abstract

 ABSTRACTPaste of Carbonated Hydroxyapatite (CHA) as a biocompatible material that can be used in thebone and teeth repair has been developed on preparation of thick film. CHA paste was preparedby mixing precipitate of CHA with CaSO4 and polyethylene glycol (PEG) in 2-propanol assolvent. Paste was deposited on substrate to get thick films by screen printing method. X raydiffraction (XRD) analysis has shown hexagonal crystal structure and crystal size of CHAacquired 7,2 nm by Scherrer’s method. Fourier Transform Infrared (FTIR) analysis has shownabsorption spectra which indicating phosphate, carbonate, and hydroxide group. Size of thiscomposite particles analyzed by PSA (particle size analyzer) about 3μm and pore size was 0.44-0.49 nm obtained from BET analysis, increased with the addition of CaSO4 (0.44 to 0,49 nm).Rephrase PEG was found as an adhesive and homogenize paste on substrat surface. In addition,CHA paste also potentially can be used as bone cement.Keywords : Paste, thick film, carbonated hydroxyapatite
SYNTHESIS AND CHARACTERIZATION OF MODIFIED MESOPOROUS SILICA-IMOBILIZED Cu(II)-ACETONITRILE COMPLEX AND ITS APPLICATION IN TRANSESTERIFICATION OF FRYING OIL -, Syukri; Pratikha, Rycce Sylviana; Jamarun, Novesar
Jurnal Riset Kimia Vol 7, No 2 (2014): March
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v7i2.184

Abstract

 ABSTRACTMesoporous silica has attracted rapidly growing attention in catalysis. In this work, mesoporoussilica was synthesized by using CTAB surfactant and then modified by AlCl3. Such materialwas used as support for Cu(II)--acetonitile complex and applied in transesterification of fryingoil. The XRD pattern of the obtained silica confirms the availability of chracteristic peak onsilica surface while its TEM exhibits the uniformity of nanochannel of the mesoporous silica.The particle size of silica support has become smaller after grafting process showed by SEMimages. FT-IR spectra of the materials indicated that the Cu(II) grafted on the mesoporoussilica was in the form of its acetonitrile complex. Supprisingly, the Cu loading the graftedcatalyst was found to be very high. That was 21%, when the catalyst applied ontransesterification of the examined frying oil the amount of total methyl ester yielded were of65%.Keywords: mesoporous silica, AlCl3, Cu(II)-acetonitrile complex, transesterification
PENGOLAHAN LIMBAH POLIPROPILEN MENJADI BAHAN BAKAR CAIR MELALUI METODE PIROLISIS Bemis, Restina; Jamarun, Novesar; Arief, Syukri
Jurnal Riset Kimia Vol 5, No 2 (2012): March
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v5i2.217

Abstract

Plastics become the biggest environmental problem when it accumulate in landfills because its non-biodegradable properties. To handle the problems, the plastics were processed to produce liquid fuels by means pyrolysis method which was in this case with and without a catalyst. In this work, polypropylene was used as a precursor and SiO2, zeolites, CaO, Fe as catalysts. FTIR spectrum of pyrolized polypropylene with and without catalysts both have shown C = C functional group at 1648 cm-1. GCMS analysis confirmed the availability of chain length of hydrocarbon between C7 -C27 which is mixture of kerosene and diesel fractions. Catalysts can lower the temperature and time reaction of pyrolysis process as they increase rendement (%) of product. Liquid fuels that produced from polypropylene pyrolysis without catalyst was 72.06%, and with catalysts were 79.59% (SiO2), 74.76%, (zeolite), 76.80% (CaO), and 76.83% (Fe).
Penggunaan Zeolit sebagai Pendegradasi Senyawa Permetrin dengan Metoda Fotolisis Zilfa, Zilfa; Suyani, Hamzar; Safni, Safni; Jamarun, Novesar
Jurnal Natur Indonesia Vol 14, No 1 (2011)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (132.086 KB) | DOI: 10.31258/jnat.14.1.14-18

Abstract

The research about the degradation of permethryn compound has been done by photolysis method using natural zeolyte as catalyst.Permethryn is one syntetic pyretroid pesticides that low toxicity for mammals but it is high toxicity for fishs, insects and water microorganisms.Zeolyte is aluminosilicate minerals that can be used for degradation of permethryn. Percentage degradation of permethryn is lower withoutzeolyte than using zeolyte as catalyst by photolysis method. 20 mg/l permethryn solution could be degraded 5.40% after 120 minutesirradiation, while by adding 0.20 g natural zeolyte, permethryn could be degraded 69.70
Efisiensi Inhibisi Korosi Baja Lunak dalam Media Asam dengan Inhibitor Ekstrak Kulit Buah Kakao (Theobroma cacao) Yetri, Yuli; Emriadi, E; Jamarun, Novesar; Gunawarman, G
Jurnal Riset Teknologi Pencegahan Pencemaran Industri Vol. 7 No. 2 (2016)
Publisher : Balai Besar Standardisasi dan Pelayanan Jasa Pencegahan Pencemaran Industri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21771/jrtppi.2016.v7.no2.p67-80

Abstract

Inhibition and adsorption properties of Theobroma cacao peel polar extract addition on corrosion inhibition efficiency of 0.3%C mild steel in hydrochloric acid solution for various exposuring time, extract concentration and working temperature were investigated using weight loss test method. Electrochemical polarization test was also conducted to confirm the effectiveness of inhibition. Infrared spectrum of the samples was also evaluated to reveal compounds of the extract which controll the inhibition process. Morphology and local composition of sample surfaces were respectively examined by scanning electron microscope (SEM) and energy dispersive X-ray spectroscopy (EDX). Thermodynamic parameters such as energy activation, enthalpy, entropy and change in the free energy were then determined using related data. The results show that the inhibition efficiency increases significantly up to 96.3% (by weight loss method) and 92.08% (Tafel) with the increase of TCPE content. The optimum efficiency is obtained at extract concentration of 2,5% for exposuring time of 768h. However, the efficiency decreases slightly with increasing working temperature in the range of 303K-323K. The polarization curve shows the inhibitor behaves as a mixed inhibitor with the dominant cathodic inhibition. The adsorption model is found to obey Langmuir adsorption isotherm. Surface condition is improved due to the adsorption and then formation of thin layer film protection in the surface of the steel. The addition of extract of cacao peels into HCl is effective to minimize corrosion attack on the mild steel.
Co-Authors -, Yulfitrin Adlis Santoni Ahmad Hafizullah Ritonga Aju Deska Akmal Djamaan Anggresani, Lia Arizal Firmansyah Asril Asril Barita Aritonang Boy isfa Boy Isfa Budi Hermawan BUSTANUL ARIFIN Cici Wulandari Darmansyah Darmansyah Denny Akbar Tanjung Denny Akbar Tanjung Didik Prasetyoko Edy Suisno Emriadi - Fadhilatul Khaira Fejri Subriadi G Gunawarman, G Giovani Giovani Hafnimardiyanti Hafnimardiyanti Hamzah Hamzah Hamzah Hamzah Hamzar Suyani Heri Satria Hermansyah Aziz Hermawan, Budi I Gusti Ngurah Antaryama Ilim Ilim Indra Arifin Iswandi Iswandi Kamisah Delilawati Pandiangan Kamisah Delilawati Pandiangan Lia Anggresani Lili Suparli S.Sn., M.Sn Lisa Utami Lisa Utami Mansur Halilintar Matlal Fajri Alif Nabiila Ayyu Trycahyani Nanda Raudhatil Jannah Navisha Yustitia Norman Ferdinal Olly Norita Tetra R.M PRAMUTOMO R.Y. Perry Burhan, R.Y. Perry Restina Bemis Restina Bemis, Restina Reza Audina Putri Risma Sari Rosta Minawati Rosta Minawati Roswita Roswita Rycce Sylviana Pratikha Rycce Sylviana Pratikha Safni Safni Selfa Dewati Samah Selvi K asman Sri Elfina Sri Elfina Suarnikan Hulu Sumaryati Syukur Surya Darma Susas Rita Loravianti Syukri - Syukri Arief Syukri Syukri Syukri Syukri Syukri Syukri Trio Saputra Upita Septiani Vivi Sisca Vivi Sisca Wasinton Simanjuntak Wellia, Diana Vanda Yulfitrin - Yuli Yetri Yuli Yetri Yulia Eka Putri, Yulia Eka Yulidar Laila Safitri Yulizar Yusuf Yundari, Yundari Zetra, Yulfi Zilfa Zilfa